[go: up one dir, main page]

US5209524A - Pipe restraining collar member having protrusions of different sizes - Google Patents

Pipe restraining collar member having protrusions of different sizes Download PDF

Info

Publication number
US5209524A
US5209524A US07/788,455 US78845591A US5209524A US 5209524 A US5209524 A US 5209524A US 78845591 A US78845591 A US 78845591A US 5209524 A US5209524 A US 5209524A
Authority
US
United States
Prior art keywords
protrusions
pipe
collar member
collar
accordance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US07/788,455
Other languages
English (en)
Inventor
Michael E. Corwon
Edwin A. Bird
Kirby L. Shaddix
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sensus Spectrum LLC
Original Assignee
M&FC Holding LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by M&FC Holding LLC filed Critical M&FC Holding LLC
Priority to US07/788,455 priority Critical patent/US5209524A/en
Assigned to M & FC HOLDING COMPANY, INC., A DE CORP. reassignment M & FC HOLDING COMPANY, INC., A DE CORP. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: BIRD, EDWIN A., CORWON, MICHAEL E., SHADDIX, KIRBY L.
Priority to CA002080861A priority patent/CA2080861A1/en
Priority to MX9206032A priority patent/MX9206032A/es
Priority to EP92203288A priority patent/EP0541149A1/en
Priority to BR929204273A priority patent/BR9204273A/pt
Application granted granted Critical
Publication of US5209524A publication Critical patent/US5209524A/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L23/00—Flanged joints
    • F16L23/02—Flanged joints the flanges being connected by members tensioned axially
    • F16L23/032—Flanged joints the flanges being connected by members tensioned axially characterised by the shape or composition of the flanges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
    • F16L47/14—Flanged joints

Definitions

  • This invention relates to pipe restraining members and is directed more particularly to a collar member comprising at least one part of a pipe restraining assembly.
  • a pipe restraining assembly including two collar assemblies, one of which is installed proximate an end of one of the pipes.
  • Each collar assembly includes two collar members which are provided with flanges adapted to be bolted together to form a pipe-encircling collar assembly.
  • Each of the two collar assemblies is provided with lugs which receive tie bolts to connect the collar assemblies to each other.
  • Internally of the collar members are gripping surfaces adapted to engage the external surfaces of the pipes.
  • the collar member gripping surfaces of Smith are provided with a layer of particles which are adapted to embed in the external surfaces of the pipes.
  • the collar member usually is formed of a relatively massive and unyielding band of metal, to insure longevity in service, the collar member has little resiliency to aid in installation, that is, in slipping over the pipe when there are interfering internal projections on the collar member.
  • protrusions including teeth, prongs, or the like
  • the protrusions nearest the ends of the collar member generally bite substantially deeper into the pipe than do the protrusions at or near the center of the collar member inside surface arc.
  • the end protrusions have been found to bite deeply into the pipe, while the center protrusions fail to touch the pipe. It therefore would be beneficial if restraining collar members having protrusions on their gripping surfaces were configured and dimensioned such that contact and engagement with the pipe restrained thereby were more nearly uniform.
  • an object of the invention to provide a restraining collar member having protrusions extending internally thereof, the collar member and the protrusions being configured, dimensioned and arranged so as to engage a pipe substantially uniformly.
  • a feature of the present invention is the provision of a pipe restraining member comprising a collar member, flange means disposed on the collar member and adapted to receive first connection means for connecting the collar member to support means, the collar member and the support means being adapted cooperatively to substantially encircle a first pipe member, lug means disposed on the collar member and adapted to receive second connecting means for connecting the collar member to a collar assembly substantially encircling a second pipe member, and elongated protrusions extending inwardly from an inside surface of the collar member and adapted to engage an external surface of the first pipe member.
  • the collar member is provided with an inside radius, measured at the free ends of the protrusions, equal to, or greater than, the outside radius of the pipe to which the collar member is to be attached.
  • the collar member comprises a band portion having the afore-mentioned protrusions extending from the inside surface thereof, and a reinforcing rib portion extending from an outside surface of the band portion centrally along the length of the band portion and generally normal to the outside surface of the band portion, the band portion and rib portion being so configured as to provide required strength in the collar member, but in addition thereto, a degree of resiliency to aid in initial installation of the collar member.
  • FIG. 1 is a front elevational view of one form of pipe restraining collar member illustrative of an embodiment of the invention
  • FIG. 2 is a side elevational view thereof
  • FIG. 3 is a top plan view of a portion thereof, taken along line III--III of FIG. 1;
  • FIG. 4 is a bottom view of a portion of the member of FIG. 1, taken along line IV--IV of FIG. 1;
  • FIG. 5 is a sectional view, taken along line V--V of FIG. 1;
  • FIG. 6 is similar to FIG. 4, but illustrative of an alternative embodiment
  • FIG. 7 is similar to FIG. 5, but illustrative of the alternative embodiment of FIG. 6;
  • FIG. 8 is a generally centerline sectional view of a pipe restraining assembly of the type in which the above pipe restraining collar members find utility;
  • FIG. 9 is a front elevational view of a pipe restraining collar member illustrative of an alternative embodiment of the invention.
  • a restraining member illustrative of the present invention comprises a collar member 2 having flange means thereon, including first and second flanges 4, 4' adapted to receive first connecting means, such as bolts 6, for connecting the collar member 2 to support means 8 (FIG. 1), which may be one or more collar members similar to the collar member 2.
  • the collar member 2 and the support means 8 are adapted cooperatively to substantially encircle a first pipe member Pl (FIG. 8).
  • the collar member 2 is provided with one or more lugs 10 adapted to receive second connecting means, such as tie bolts 12, for connecting the collar member 2 to a collar assembly 14 (FIG. 8) encircling a second pipe P2.
  • the collar member 2 is provided with protrusions 16 extending inwardly from an inside surface 18 of the collar member 2 and adapted to engage an external surface S of the first pipe member Pl.
  • the protrusions 16 are of solid material and are of substantially equal height, about 0.040-0.10 inch, and preferably about 0.070 inch.
  • the protrusions 16 are elongated and slope inwardly from their base margins to define, in one embodiment, elongated central ridges 20 (FIG. 4).
  • the protrusions 16 all have substantially equal base lengths, base widths, and central ridge lengths.
  • the protrusions 16 are provided with substantially flat surfaces 22 which engage the pipe (FIGS. 6 and 7).
  • the protrusions are arranged in staggered rows 30.
  • end protrusions 34 are disposed adjacent front and back edges 36, 38 of the collar member.
  • Other first row protrusions 40 are disposed in a straight line between the first row end protrusions 34 and spaced apart by equal distances, the centerline to-centerline distance being about 0.25 inch.
  • second row protrusions 44 include end protrusions 46 spaced inwardly from the collar member edges 36, 38 and one or more other second row protrusions 48 disposed in a straight line between the second row end protrusions 46 and spaced apart by equal distances, the centerline-to-centerline distance being about 0.25 inch.
  • the first and second rows 32, 42 of protrusions are thus staggered and equally spaced to facilitate an evenly distributed gripping force on the pipe.
  • the protrusions 16 are thus disposed so as to form interrupted inwardly extending lands adapted to engage the pipe intermittently circumferentially thereof.
  • the elongated protrusions are arranged such that they form interrupted circumferential inwardly extending lands 48 adapted to engage the exterior of the pipe member P1. Inasmuch as the lands 48 are interrupted, the strength of the pipe member is in large measure preserved.
  • the staggered disposition of the protrusions insures that plastic caused by the protrusions to flow forwardly and rearwardly of a given protrusion, encounters other protrusions operative to limit the plastic flow.
  • the collar member 2 comprises a band portion 50 generally rectangular in cross-section (FIGS. 5 and 7), and a reinforcing rib portion 52 upstanding from an external surface 54 of the band portion centrally along the length of the band portion and generally normal to the external surface 54 of the band portion 50.
  • the band portion 50, the rib portion 52, the lug 10, and the flanges 4, 4' are formed integrally or fabricated with each other to form a unitary member.
  • the rib portion 52 preferably extends from flange 4 to flange 4', a first rib portion 56 (FIG. 1) extending from the first flange 4 to the lug 10, and a second rib portion 58 extending from the second flange 4' to the lug 10.
  • the rib portion 52 serves to reinforce the flanges 4, 4' and the lug 10, the latter of which, in service, is under stress from the tie bolts 12.
  • the combination of the band portion 50 and the rib portion 52 provides the strength needed to insure longevity of the restrainer in service, and the resiliency needed to facilitate initial installation of the restrainer on a pipe.
  • the above-described restraining collar member is particularly suitable for use with non-metallic pipe.
  • the collar member 2 is slipped over the pipe member P1 and clamped to the support means 8.
  • the collar member 2 easily engages the pipe member P1 without forcing. If there is interference because of tolerances in manufacture of the pipe and/or collar member, the band and rib configuration of the collar member permits a limited degree of flexure to facilitate saddling the pipe member with the collar member.
  • the ridges 20, or surfaces 22, of the protrusions 16 either bite slightly into the pipe, or firmly engage the exterior of the pipe, generally equally around the collar member.
  • the combination collar member 2 and support means 8 is connected to the collar assembly 14 by the tie bolts 12.
  • the collar member 2 is further provided with a plurality of taller protrusions 60 which, upon installation, take an immediate bite into the pipe.
  • taller protrusions may be used with metallic pipe.
  • the taller protrusions Upon installation on a metallic pipe member, the taller protrusions take an immediate bite into the pipe, and, depending upon hardness of the pipe, the tolerances involved and true outside diameter of the metallic pipe, the metallic pipe and shorter protrusions 16 may come into contact and the protrusions 16 bite into the metallic pipe.
  • the shorter protrusions may not bite into the metallic pipe member, but in such instances, the taller protrusions 60, having accomplished firm metal-to-metal contact, serve to securely anchor the collar member to the pipe member.
  • the alternative embodiment of collar member shown in FIG. 9, when rendered in a metallic material finds utility in cooperation with both non-metallic and metallic pipe.
  • the inside radius of the collar member, computed from the ridges 20, or surfaces 22, of the shorter protrusions is made substantially equal to the outside radius of the pipe.
  • the resiliency of the band and rib collar member construction permits installation of the collar member such that the taller protrusions 60 initially are able to engage the pipe substantially equally around the collar member.
  • the taller protrusions 60 are about 0.030 inch taller than the protrusions 16, and have a height of about 0.070-0.130 inch, and preferably about 0.10 inch.
  • the projections 60 are of the same material but not necessarily of the same general configuration as the projections 16.
  • each collar member is provided with a relatively small number of the taller protrusions 60, generally about 6-10 of such protrusions.
  • the taller protrusions 60 are distributed around the collar member.
  • Each of the taller protrusions 60 is disposed such that each taller protrusion is proximate a number of the protrusions 16, and remote from any other taller protrusion.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supports For Pipes And Cables (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
US07/788,455 1991-11-06 1991-11-06 Pipe restraining collar member having protrusions of different sizes Expired - Fee Related US5209524A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US07/788,455 US5209524A (en) 1991-11-06 1991-11-06 Pipe restraining collar member having protrusions of different sizes
CA002080861A CA2080861A1 (en) 1991-11-06 1992-10-19 Pipe restraining collar member
MX9206032A MX9206032A (es) 1991-11-06 1992-10-21 Collar retenedor para tubos. collar retenedor para tubos.
EP92203288A EP0541149A1 (en) 1991-11-06 1992-10-27 A pipe restraining collar member
BR929204273A BR9204273A (pt) 1991-11-06 1992-11-04 Elemento para contencao de tubo

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/788,455 US5209524A (en) 1991-11-06 1991-11-06 Pipe restraining collar member having protrusions of different sizes

Publications (1)

Publication Number Publication Date
US5209524A true US5209524A (en) 1993-05-11

Family

ID=25144545

Family Applications (1)

Application Number Title Priority Date Filing Date
US07/788,455 Expired - Fee Related US5209524A (en) 1991-11-06 1991-11-06 Pipe restraining collar member having protrusions of different sizes

Country Status (5)

Country Link
US (1) US5209524A (es)
EP (1) EP0541149A1 (es)
BR (1) BR9204273A (es)
CA (1) CA2080861A1 (es)
MX (1) MX9206032A (es)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5641185A (en) * 1995-06-26 1997-06-24 Harth; George C. Annular clamping flanges
US5755464A (en) * 1996-03-12 1998-05-26 Erwin's Llc Segmented flange structure including a shim
US5797629A (en) * 1996-04-16 1998-08-25 Dana Corporation Hose coupling and method of securing a hose to the coupling by crimping
US6065784A (en) * 1998-06-12 2000-05-23 Ebaa Iron, Inc. Pipe joint restraint ring with multiple inside radii
US6079753A (en) * 1996-03-12 2000-06-27 Erwin's Llc Segmented flange including a shim
US20060087121A1 (en) * 2004-10-22 2006-04-27 Ebaa Iron, Inc. Pipe ring apparatus and method
US20080207366A1 (en) * 2003-06-25 2008-08-28 Tsubakimoto Chain Co. Tensioner
WO2008106654A3 (en) * 2007-03-01 2008-10-30 Tyco Fire Products Lp Two-piece flange adapter
US20090230672A1 (en) * 2008-03-11 2009-09-17 Elisabet Patricia Pires Cabado Security splicing system of aligned pipes, against the expansion and/or contraction thereof
US20090252595A1 (en) * 2008-04-07 2009-10-08 Cross Manufacturing Co. )1983) Ltd. Non-contacting face seals and thrust bearings
US20110049879A1 (en) * 2009-09-01 2011-03-03 Patrick John Fitzpatrick Clamp suitable for increasing the fatigue life of the butt welds of a pipe pressure vessel which is subsequently bent
US9163760B2 (en) 2011-06-09 2015-10-20 Ebaa Iron, Inc. Pipe joint restraint apparatus
US9625067B2 (en) 2009-09-01 2017-04-18 Sea Ng Corporation Clamp suitable for increasing the fatigue life of the butt welds of a pipe pressure vessel which is subsequently bent
US20200003401A1 (en) * 2018-06-29 2020-01-02 Christopher Stevenson Tool Holder Clamp for Suction Hose

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102434746A (zh) * 2011-08-26 2012-05-02 华恩夫成套设备(上海)有限公司 一种高密度聚乙烯管连接装置

Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US640183A (en) * 1899-04-07 1900-01-02 Solomon R Dresser Friction pipe-coupling.
US659888A (en) * 1900-01-18 1900-10-16 Solomon R Dresser Pipe-coupling.
US2371971A (en) * 1943-04-26 1945-03-20 Michigan Patents Corp Hose connector
FR1420486A (fr) * 1964-10-20 1965-12-10 Lotigie Ets Raccord pour tubes semi-rigides cylindriques à bouts unis en matière plastique
US3249371A (en) * 1963-10-14 1966-05-03 Imp Eastman Corp Full grip clamp
US3252192A (en) * 1964-04-01 1966-05-24 Joseph B Smith Clamp ring for pipe and the like
US3432190A (en) * 1966-11-30 1969-03-11 Aeroquip Corp Clamp-type hose fitting
US3817561A (en) * 1970-12-31 1974-06-18 Instruments & Movements Ltd Pipe joint connector
FR2242630A1 (en) * 1973-08-28 1975-03-28 Jakubowski Eugene Bolted joint for semi-rigid pipes of plastic - has two half shells with sharp ridges for firm grip
US4111469A (en) * 1976-12-23 1978-09-05 Samuel Moore And Company Hydraulic hose and coupling assembly
US4150848A (en) * 1977-09-09 1979-04-24 Trelleborg Aktiebolag Coupling for non-metallic hose
DE2900678A1 (de) * 1979-01-10 1980-07-24 Immendinger Giesserei Masch Schubsicherung fuer rohrverbindungen
US4372587A (en) * 1979-11-26 1983-02-08 Uni-Flange Corporation Adapter flange
US4522434A (en) * 1982-04-23 1985-06-11 Victaulic Company Of America Multiple key segmented pipe coupling
US4568112A (en) * 1982-12-01 1986-02-04 Ebba Iron Inc. Pipe joint restrainer glands
US4635970A (en) * 1983-10-07 1987-01-13 Haines Robert E Thrust rod anchor for pipe joint restraint systems
US4820194A (en) * 1987-09-30 1989-04-11 Amp Incorporated Minature electrical shunt connector
US5090742A (en) * 1990-02-09 1992-02-25 Aegis Industries, Inc. Pipe harness clamp

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2738993A (en) * 1953-01-19 1956-03-20 Boeing Co Flexible tube couplings
GB1563886A (en) * 1977-01-27 1980-04-02 Heer & Co Spigot-and-socket connections

Patent Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US640183A (en) * 1899-04-07 1900-01-02 Solomon R Dresser Friction pipe-coupling.
US659888A (en) * 1900-01-18 1900-10-16 Solomon R Dresser Pipe-coupling.
US2371971A (en) * 1943-04-26 1945-03-20 Michigan Patents Corp Hose connector
US3249371A (en) * 1963-10-14 1966-05-03 Imp Eastman Corp Full grip clamp
US3252192A (en) * 1964-04-01 1966-05-24 Joseph B Smith Clamp ring for pipe and the like
FR1420486A (fr) * 1964-10-20 1965-12-10 Lotigie Ets Raccord pour tubes semi-rigides cylindriques à bouts unis en matière plastique
US3432190A (en) * 1966-11-30 1969-03-11 Aeroquip Corp Clamp-type hose fitting
US3817561A (en) * 1970-12-31 1974-06-18 Instruments & Movements Ltd Pipe joint connector
FR2242630A1 (en) * 1973-08-28 1975-03-28 Jakubowski Eugene Bolted joint for semi-rigid pipes of plastic - has two half shells with sharp ridges for firm grip
US4111469A (en) * 1976-12-23 1978-09-05 Samuel Moore And Company Hydraulic hose and coupling assembly
US4150848A (en) * 1977-09-09 1979-04-24 Trelleborg Aktiebolag Coupling for non-metallic hose
DE2900678A1 (de) * 1979-01-10 1980-07-24 Immendinger Giesserei Masch Schubsicherung fuer rohrverbindungen
US4372587A (en) * 1979-11-26 1983-02-08 Uni-Flange Corporation Adapter flange
US4522434A (en) * 1982-04-23 1985-06-11 Victaulic Company Of America Multiple key segmented pipe coupling
US4568112A (en) * 1982-12-01 1986-02-04 Ebba Iron Inc. Pipe joint restrainer glands
US4635970A (en) * 1983-10-07 1987-01-13 Haines Robert E Thrust rod anchor for pipe joint restraint systems
US4820194A (en) * 1987-09-30 1989-04-11 Amp Incorporated Minature electrical shunt connector
US5090742A (en) * 1990-02-09 1992-02-25 Aegis Industries, Inc. Pipe harness clamp

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5641185A (en) * 1995-06-26 1997-06-24 Harth; George C. Annular clamping flanges
US5755464A (en) * 1996-03-12 1998-05-26 Erwin's Llc Segmented flange structure including a shim
US6079753A (en) * 1996-03-12 2000-06-27 Erwin's Llc Segmented flange including a shim
US5797629A (en) * 1996-04-16 1998-08-25 Dana Corporation Hose coupling and method of securing a hose to the coupling by crimping
US6065784A (en) * 1998-06-12 2000-05-23 Ebaa Iron, Inc. Pipe joint restraint ring with multiple inside radii
US20080207366A1 (en) * 2003-06-25 2008-08-28 Tsubakimoto Chain Co. Tensioner
US20060087121A1 (en) * 2004-10-22 2006-04-27 Ebaa Iron, Inc. Pipe ring apparatus and method
US7384076B2 (en) 2004-10-22 2008-06-10 Ebaa Iron, Inc. Pipe ring apparatus and method
US20080203727A1 (en) * 2004-10-22 2008-08-28 Ebaa Iron, Inc. Pipe ring apparatus and method
US8267438B2 (en) 2007-03-01 2012-09-18 Tyco Fire Products Lp Two-piece flange adapter
US20100187812A1 (en) * 2007-03-01 2010-07-29 Tyco Fire Products, Lp Two-piece flange adapter
WO2008106654A3 (en) * 2007-03-01 2008-10-30 Tyco Fire Products Lp Two-piece flange adapter
US20090230672A1 (en) * 2008-03-11 2009-09-17 Elisabet Patricia Pires Cabado Security splicing system of aligned pipes, against the expansion and/or contraction thereof
US8070190B2 (en) * 2008-03-11 2011-12-06 Elisabet Patricia Pires Cabado Security splicing system of aligned pipes, against the expansion and/or contraction thereof
US20090252595A1 (en) * 2008-04-07 2009-10-08 Cross Manufacturing Co. )1983) Ltd. Non-contacting face seals and thrust bearings
US20110049879A1 (en) * 2009-09-01 2011-03-03 Patrick John Fitzpatrick Clamp suitable for increasing the fatigue life of the butt welds of a pipe pressure vessel which is subsequently bent
US9625067B2 (en) 2009-09-01 2017-04-18 Sea Ng Corporation Clamp suitable for increasing the fatigue life of the butt welds of a pipe pressure vessel which is subsequently bent
US9163760B2 (en) 2011-06-09 2015-10-20 Ebaa Iron, Inc. Pipe joint restraint apparatus
US20200003401A1 (en) * 2018-06-29 2020-01-02 Christopher Stevenson Tool Holder Clamp for Suction Hose
US10634323B2 (en) * 2018-06-29 2020-04-28 Christopher Stevenson Tool holder clamp for suction hose

Also Published As

Publication number Publication date
CA2080861A1 (en) 1993-05-07
MX9206032A (es) 1993-07-01
EP0541149A1 (en) 1993-05-12
BR9204273A (pt) 1993-05-11

Similar Documents

Publication Publication Date Title
US5190324A (en) Pipe restraining member
US5209524A (en) Pipe restraining collar member having protrusions of different sizes
US4380348A (en) Pipe clamping assembly
US4647083A (en) Separation preventive pipe joint
CA1116653A (en) Internal coupling structure and joint for pipe or tubing
US5468025A (en) Sewer line vent clamp assembly
US4779900A (en) Segmented pipe joint retainer glands
CA1288218C (en) Hose band
US4643465A (en) Pipe coupling
US4417754A (en) Pipe joint for preventing separation
JPS63259290A (ja) 継手
US20030085566A1 (en) Pipe coupling device
US3394952A (en) Sewer pipe joint
US4708373A (en) Tapping sleeve or service clamp for use in attaching a branch pipe to a main in a fluid supply system
NZ202580A (en) Quick release hose coupling
US4969240A (en) Expandible elastic clamping strap for end portions of hoses and the like
GB2212236A (en) A pipe coupling assembly with gripping ring
US4848195A (en) Spanner-wrench
US4473246A (en) Pipe coupling
US3367683A (en) Hose coupling
US6581984B1 (en) Corrugated spiral pipe with a coupling device and method for installing the same
US4063758A (en) Coupling for pipes
US3315991A (en) Pipe coupling
JP3021104U (ja) ボルト及びナットの防錆キャップ
US4547004A (en) Coupling

Legal Events

Date Code Title Description
AS Assignment

Owner name: M & FC HOLDING COMPANY, INC., A DE CORP., DELAWARE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:CORWON, MICHAEL E.;BIRD, EDWIN A.;SHADDIX, KIRBY L.;REEL/FRAME:005910/0439

Effective date: 19911105

FPAY Fee payment

Year of fee payment: 4

FEPP Fee payment procedure

Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

REMI Maintenance fee reminder mailed
LAPS Lapse for failure to pay maintenance fees
FP Lapsed due to failure to pay maintenance fee

Effective date: 20010511

STCH Information on status: patent discontinuation

Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362